On Wed, Feb 15, 2012 at 9:22 PM, Adam Jackson ajax@redhat.com wrote:
On 2/8/12 6:19 PM, Ben Widawsky wrote:
Similar to i915, it's nice to be able to query this device uniquely and get some info
Signed-off-by: Ben Widawskyben@bwidawsk.net
So, this is actually not especially useful as written. You'd like to be able to use this to find the vgem device node, but since it's a device-specific ioctl it collides with whatever happens to be device-specific ioctl number 2 on whatever device you've opened. On i915, that's I915_FLIP, and you promptly oops the machine.
We have DRM level caps that we could use for that if necessary.
I'm not sure we need a getparam for vgem if the only thing it reports is VGEM status.
Though yeah what ajax said looking in /sys is the discovery path of choice.
Dave.